Lockout mode for reverse order read operation
US11398280B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2021 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Mar 2, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10B43/27
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for a pre-lockout read for a reverse order read operation with lockout mode is disclosed. The method comprises: performing a pre-lockout read at a first sensing level to determine which memory cells of the set of memory cells are on in response to the first sensing level being applied to a selected word line; performing a first sensing operation on the selected word line at a second sensing level including sensing memory cells of the set of memory cells determined to be off in response to the pre-lockout read; and performing a second sensing operation on the selected word line at a third sensing level including sensing memory cells of the set of memory cells determined to be on in response to the pre-lockout read, where the first sensing level is of a value between the second sensing level and the third sensing level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.